import java.util.Scanner;

public class Text {
    public static void main(String[] args) {
        Scanner san = new Scanner(System.in);
        while (san.hasNextLine()){
            String a = san.next();
            StringBuilder b = new StringBuilder();
            for (int i = 0; i < a.length(); i++) {
                char c = (char)(a.charAt(i)+32);
                b.append(c);
            }
            System.out.println(b.toString());
        }
    }

}
